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Toshiba 2805-s402 Ultimate retro gaming laptop

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Reply 100 of 104, by Prez

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Warlord wrote on 2020-10-19, 21:48:
The XG implementation is that the codec sits on IRQ 11 as a PCI device and the legacy sound system is mapped to IRQ 7. On my mo […]
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The XG implementation is that the codec sits on IRQ 11 as a PCI device and the legacy sound system is mapped to IRQ 7.
On my model the Geforce 2 go is mapped to IRQ 5 which isn't an issue.

Setting up the laptop so that you can use the XG in pure dos isnt that hard as long as you follow my advice.
I have tested Prince of persia, decent, doom etc all works fine. In decent you can use sbpro for effects and OPL3 as music. Though id recommend playing games that have General Midi in 98 under dos box because the native wave table of the XG is pretty good. It's quality is up there with Roland.

Warlord wrote on 2020-10-19, 21:53:
Drivers Modified DOS Driver for Toshiba 2805 Series. download/file.php?id=94316 VXD Drivers http://cdgenp01.csd.toshiba.com/cont […]
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Drivers
Modified DOS Driver for Toshiba 2805 Series.
download/file.php?id=94316
VXD Drivers
http://cdgenp01.csd.toshiba.com/content/suppo … s/t820snd95.exe

Guide here that should work on getting the 2805 series sound working in pure DOS and 98 properly that should apply to all the other models.

1. To go into BIOS press ESC and it will prompt you to hit F1.
2. 1st page configure parallel port as std-bi direct
3. Press page up or down to go into 2nd bios screen. You want to change Config to all devices instead of by os.
4. For parallel port select not used.

Windows Config
5. Install windows 98
6. You want to use the VXD drivers for windows I will link to to.
7. Go to device manager select the parallel port and manually change the resources. That means uncheck automatic settings.
go through the basic configurations until you find the setting that doesn't use and IRQ. On mine that is setting 003. Then Save that and I went ahead and disabled the port anyways.
8. for sound a video game controller you want to click on the legacy sound system, again you want to manually set the resources. Try Basic configuration 2. Change to IRQ7 DMA 1 io 220-220f, 388-038f, 330-0331f etc These are the like the default legacy values.

For Dos.
1. You have to use the modified 810/815 driver I'll link.
2. The SET Blaster Parameters. are SET BLASTER=A220 I7 D1 T4
3. I already configured this in the driver I am going to link here. But if you use the one off Phils computer page you need to change somethings to get it to work.
4. If you use some other driver than the one for here. Be advised that the one from phils has the wrong environmental variables set up in the batch file and you need to change that.
5. To configure you go "YMFIRQ 11" without quotes at the command prompt.
6. Type SETUPDS Change it to S-IRQ and then you can change it to I7 220 D1 ETC. With the driver I will link it should already be setup for you. Then save.
7. Then to run the driver you type Loadtsr at the command prompt that's all.

Hi !
I did exactly what you posted for my new 2805-S202 and it works beautifully !
Thanks a lot !!

Best regards
Philippe Dubois

Old computers and videogames freak
President of french association https://mo5.com
Get better, get old ! 😁

Reply 101 of 104, by crazii

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crazii wrote on 2021-11-22, 02:37:
Looks very nice. BTW one update of 2805: I ran Prince of Persia in 98, music and sound effect plays good but it crashes right on […]
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Looks very nice.
BTW one update of 2805: I ran Prince of Persia in 98, music and sound effect plays good but it crashes right on the first sound effect when entering level1, win98 report errors on some address and IRQ 7 (sound blaster irq). I tried play in DOS and the game works fine.
Found a similar thread here: Prince of Persia Sound issues...
Don't know if it is incompatible with 98 system or the sound card/driver.
Another problem I found is the SB music volume is lower than in DOS for some games, and lower than the 98 system, except that the MPU-401 General MIDI is selected.

Same happened on my p3 rig with sblink. And today I found that the setupds still has effect after win 98 startup. It's resident in memory or it's just a configuration utility that activate the pcpci mode of the ymf7x4. So I disable the legacy driver in device manager and only reserve the IRQ in the bios, for setupds. And everything works fine for Prince of Persia 1 and 2.

I believe the legacy DOS driver is for w9x pure PCI mode, since the sblink is used and pcpci activated, the legacy driver is not needed and otherwise it will cause compatibility problem.

Toshiba Satellite Pro 4300 - YMF744, Savage IX
Toshiba Satellite 2805-S501 - YMF754, GeForce 2Go
IBM Thinkpad A21p - CS4624, Mobility Radeon 128
main: Intel NUC11PHKi7C Phantom Canyon: i7-1165G7 RTX2060 64G 2T760PSDD

Reply 102 of 104, by vorob

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With official WIN ME installation and it’s drivers I noticed that gpu clock changes dynamically according to your current load, like on any modern gpu. That’s a surprise cause all my retro laptops has fixed clock that can be changed only by altering slider in driver.

Reply 103 of 104, by ae86

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Just got a 2805-S402 off ebay. Been searching for awhile, and was loosing hope of ever finding one of these. Listing was posted as "Vintage Toshiba Satellite Laptop" no mention of the model # in the posting. Lucky I searched for Toshiba Laptop at the time. Saw pictures of the worn out palm rest and the bottom revealing it was a 2805-S402.

Fully functional, great shape minus the wear on the palm rest, and very stiff hinges. Screen is nice, bright and uniformly lit.

Came bios locked, but the parallel port loopback cable trick worked. Previous owner had Windows 2000 pro on it.

Installing DOS 6.1 and Win 98se on it now.